20772922 has 8 divisors (see below), whose sum is σ = 31178772. Its totient is φ = 10380000.

The previous prime is 20772911. The next prime is 20772923. The reversal of 20772922 is 22927702.

It can be written as a sum of positive squares in 2 ways, for example, as 20349121 + 423801 = 4511^2 + 651^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (20772923) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4272 + ... + 7732.

Almost surely, 2^20772922 is an apocalyptic number.

20772922 is a deficient number, since it is larger than the sum of its proper divisors (10405850).

20772922 is a wasteful number, since it uses less digits than its factorization.

20772922 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6464.

The product of its (nonzero) digits is 7056, while the sum is 31.

The square root of 20772922 is about 4557.7321114783. The cubic root of 20772922 is about 274.8943814791.

The spelling of 20772922 in words is "twenty million, seven hundred seventy-two thousand, nine hundred twenty-two".